616 PROCEEDINGS OF WASHINGTON MEETING. 



The success of this movement was afterwards brought to the attention of the Inter- 

 national Geological Congress in London in 1889. Professor H. S. Williams suggested 

 to Mr. J. F. Kemp the advisability of initiating a similar movement in the Geological 

 Society of America. Mr. Kemp prepared a paper on this subject for the New York 

 meeting of the Geological Society in 1890, but for the want of time it was crowded 

 out. He urged the Secretary to bring the matter before the Council, and at the reg- 

 ular meeting of the Council, held in Washington in April, 1890, the following Fellows 

 were appointed a committee on photographs : Professor J, F. Kemp, Cornell Univer- 

 sity, Ithaca, N. Y.; Professor W. M. Davis, Harvard University, Cambridge, Mass.; 

 and Mr. J. S. Diller, U. S. Geological Survey, Washington, D. C. "*" 



The object of the movement is to make a photo-geologic survey, and secure for 

 the Society a national collection of photographs illustrating the geology of the country. 

 The demands for such a collection, already felt by the committee, are, first, to furnish 

 to teachers better illustrations to use in teaching geology, and, second, to furnish to 

 investigators material for comparative study. 



The plan of the committee is: (1) To solicit donations of photographs of geologic 

 phenomena, not only from Fellows of the Geological Society of America, but also 

 from all other persons who can furnish them; (2) To exhibit the collection of pho- 

 tographs thus obtained at the annual meetings of the Society; and (3) To publish 

 annually in the proceedings of the Society a report containing a register of the pho- 

 tographs received during the year. 



The committee has issued three circulars. Number 1 was hektographed, and dis- 

 tributed in June, 1890. The same matter was printed and sent out in August, 1890, 

 as circular number 2. The third circular was issued at the Washington meeting of 

 the Society, and has since been distributed from llochester by the Secretary. It con- 

 tains a complete, but greatly abridged, list of the donations of photographs received 

 before December 29, 1890. 



At that time the committee had received 293 photographs, of which 21 were donated 

 by Professor J. F. Kemp, of Ithaca ; 269 by the Geological Survey, through the 

 Director, Major J. W. Powell; and 3 by Professor W. B. Dwight, of Poughkeepsie. 



To facilitate exhibition and examination at the annual meeting, and at the same 

 time to ensure preservation, the photographs were classified and temporarily bound 

 together in the form of books, as indicated in circular number 3. 



Since December 29, 25 photographs have been received from Dr. George H. Wil- 

 liams, of Baltimore; Professor P. H, Mell, of Auburn, Alabama; and Mr. Q. P. 

 Merrill, of Washington, D. C. Professor W. M. Davis announces that he is pre- 

 paring for the Society a collection of views illustrating the physical features of New 

 England. 



The expenses of the committee in printing the circulars and preparing the photo- 

 graphs for exhibition have been about $20. 



The committee solicit the donation of good photographs which clearly illustrate 

 important geologic phenomena, among which may be mentioned typical views of 

 eruptive and sedimentary rocks, of dikes, bosses, contacts, transitions, folds, faults, 

 jointing, cleavage, weathering, etc., of glaciers and other geologic agents, as well as 

 of good exposures of definite geological horizons and of characteristic topographic 

 forms, especially those which have a visible bearing upon the geologic history of 

 the country. 



Photographs may be sent to any member of the committee. Prints smaller than 

 4 by 4:} inches are not desired. They should all be mounted ; and for artistic effect, 

 as well as ease of preservation, gray cards are preferred. 



